An effective description of momentum diffusion in a charged plasma from holography

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We discuss the physics of momentum diffusion in a charged plasma.

• Following the holographic strategy outlined in arXiv:2012.03999 we construct an open effective field theory for the low-lying modes of the conserved currents.
• The charged plasma is modeled holographically in terms of a Reissner-Nordstrom-AdS black hole.
• We analyze graviton and photon fluctuations about this background, decoupling in the process the long-lived momentum diffusion mode from the short-lived charged transport mode.